I've got the Roxy mouldings kit to build. Any advice or potential pit falls to avoid? The donor loco appears to have tender pick-up as well as loco pick-up, any issues with that? It's by no means the first kit I've built but its not for me so as its free to ask.......
It's been a while since I started mine so I'm working form long-term memory here (which may not be all it could be) but hopefully the following will be of use.
IIRC the tender that comes with the Graham Farish Midland compound is a bit wheel job, but the parts in the kit make a 4 wheel one as per the prototype (I can't recall if the wheels for the tender were in the kit or not). As there is a new tender in the kit then the model will be picking up from the loco alone so much ou will not need to sort out tender pick ups unless you wanted to.
I have a feeling that one of the reasons why mine has not been finished is that for some reason my footplate was off, and (from memory) the bolt hole in the front footplate was too far forward so it didn't line up with the hole at the front end of the footplate that is used to hold the front end of the chassis in (the back end used the typical Farish lugs). It may be worth checking this before you start the build - just make sure the footplate casting is flat as it seems to get bent quite easily in the packing.
Other than the issue with my footplate it seems to go together very well, and certainly makes for a handsome loco.
Obvioulsy, as with any kit, it is best not to start the kit at all until you have the correct chassis in good working order as this will be needed to ensure all the parts fit properly.